That is true, though many of the sellers have reportedly very good return policies. Some of them will pay for return shipping, and some will cut you some sort of refund if it's only a minor hassle.

I'm anxious to see how much Overlord will charge for the OC models and what the shipping cost to Canada is finalized at. They are prepping an initial batch using "2B" boards found "in a broom closet" LOL.